diff --git a/doc/src/01010-architecture.md b/doc/src/01010-architecture.md
index fed1da41..1cbaffac 100644
--- a/doc/src/01010-architecture.md
+++ b/doc/src/01010-architecture.md
@@ -81,7 +81,7 @@ terminal user interface, graphical user interface or web interface.
 
 ## Types
 
-The imag core, hence the libimagstore, libimagrt and libimagerror, provide a set
+The imag core, hence the libimagstore and libimagrt, provide a set
 of types that a user (as in a library writer) should be aware of.
 
 First of all, there is the `Runtime` type which is provided by the libimagrt. It
@@ -107,7 +107,3 @@ is the toml-rs crate (external project). Convenience functionality is provided
 via the `toml-query` crate, which is an external project which was initiated and
 extracted from the imag project.
 
-Error types are also important.
-All errors in imag projects should be created with `error-chain`.
-libimagerror provides functionality to enhance the experience with `Result`
-types and general tracing of errors.